Sleep Apnea
Obstructive sleep apnea is the most filed secondary claim in the VA system, and one of the most denied, usually for the same two reasons: the diagnosis came years after service, and a C&P examiner attributed everything to weight. Both problems have medical answers. Our internists and board-certified pulmonologists write opinions that carry the full causal chain, from the service-connected anchor through medication effects and weight gain to the airway, with the literature cited and the examiner's reasoning answered rather than ignored.
DC 6847
About Sleep Apnea Nexus Letter VA Claims
Obstructive sleep apnea (OSA) is a mechanical problem: during sleep, the upper airway narrows or collapses, breathing stops and restarts, oxygen dips, and the brain jolts the body half awake, dozens of times an hour, all night. The veteran usually cannot observe any of it. What they notice is the exhaustion, and what a spouse or bunkmate notices is the snoring that stops, the gasp, the restart. Central and mixed apnea are rated under the same code, Diagnostic Code 6847, but obstructive disease is what the overwhelming majority of veteran claims involve.
The rating structure is unusually simple. A confirmed diagnosis with documented sleep disordered breathing starts at 0%, persistent daytime hypersomnolence rates 30%, required use of a breathing assistance device such as CPAP rates 50%, and the 100% level describes chronic respiratory failure or a tracheostomy. Since most diagnosed veterans are prescribed CPAP, most granted claims land at 50%. The fight is almost never about the rating, although the VA has proposed changing these criteria, which our rating-change guide explains in full. The real fight is service connection, because sleep apnea is typically diagnosed years after separation, and because weight, the most common risk factor, gives examiners an easy alternative explanation.
That is why this claim rewards a physician-built opinion more than almost any other. The winning file names its theory, walks the mechanism, addresses weight honestly instead of hoping nobody mentions it, and grounds onset in the observations of people who were there. Our clinicians nationwide build exactly that file, and pricing is flat and published, never a percentage of back pay.
Three Ways Sleep Apnea Connects to Service
The theory determines the evidence, and choosing the wrong one is a common reason strong cases fail.
Secondary to PTSD or Mental Health
THE MOST FILLED PATHWAY
Hyperarousal fragments sleep architecture, psychiatric medications promote significant weight gain, and both compound the airway problem. The opinion traces each link with dates and doses, and cites the literature on the PTSD and OSA association
Direct Service Connection
ONSET IN SERVICE
Witnessed snoring and apneic episodes in the barracks, fatigue complaints in service records, and a diagnosis that came later because nobody sleep-tests a 25 year old. Lay statements carry onset, and the opinion connects them to the confirmed diagnosis.
Secondary Through Other Conditions
RHINITIS, GERD & MEDICATIONS
Service-connected rhinitis or deviated septum narrowing the upper airway, reflux disturbing sleep, or weight gain driven by medications and service-connected orthopedic conditions that ended physical activity. Each chain needs its own mechanism, stated plainly.
Why Sleep Apnea Claims Get Denied
Where Claims Fall Short
1
The diagnosis came after service, and nobody bridged the gap.
A 2019 sleep study cannot speak for what happened in 2004 unless someone makes it speak. The bridge is lay evidence from people who witnessed the symptoms then, service records showing the fatigue, and a physician explaining why the later diagnosis is consistent with that earlier onset.
2
The examiner said weight, and the file said nothing back.
Obesity is the most common negative C&P rationale in these claims, and silence concedes it. VA General Counsel precedent allows obesity to serve as an intermediate step when a service-connected condition or its treatment caused the weight gain. The rebuttal walks that chain instead of avoiding it.
3
The theory was never actually chosen.
Files that gesture at direct connection, PTSD, and medications all at once, without committing to a mechanism for any of them, read as speculation. A physician's letter states the theory, or carries multiple theories properly, each with its own complete reasoning.
What These Claims Look Like
In Practice
Details in these examples are illustrative.
PTSD, the medication, the weight, the machine
A veteran service connected for PTSD at 70% gained sixty pounds across four years on psychiatric medications, was diagnosed with OSA, and was prescribed CPAP. The C&P examiner attributed the apnea to obesity and stopped there. Our internist's opinion traced the full chain: the medication history with dates and known weight-gain profiles, the weight curve from the records, the hyperarousal literature, and the conclusion that the obesity was itself a link in the service-connected chain, not an alternative to it.
Secondary to PTSD · Intermediate-step rebuttal
The bunkmate remembered
A veteran diagnosed eight years after separation had no in-service sleep study and no mention of apnea in his service records, but two former roommates wrote statements describing snoring that stopped and restarted with gasps, and his records held repeated sick-call visits for fatigue. The pulmonologist's opinion explained why those observations describe classic apneic episodes and why an in-service onset is at least as likely as not.
Direct connection · Lay evidence carried onset
Denied once, rebuilt with the chain intact
A claim filed without any medical opinion was denied on a C&P examiner's two-sentence rationale citing age and body habitus. The rebuttal opinion answered the examiner point by point, supplied the mechanism the original file never stated, and served as the new and relevant evidence for a Supplemental Claim.
C&P rebuttal · Supplemental Claim
What's Included
How Sleep Apnea Nexus Letter Connects to Service
These are the medical pathways our clinicians use to establish nexus between sleep apnea nexus letter and military service:
Who Should Write Your Sleep Apnea Nexus Letter?
Match the writer to the medical question for maximum probative weight:
Frequently Asked Questions
About Sleep Apnea Nexus Letters